Liquid-heater.



F. NOVOTNY.

LIQUID HEATER. APPLICATION FILED sBPT..s,19o7.

Patented Dec. 15, 1908.

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UNITED STATES PATENT ommen.

merlin-HEATER.

Specification ofLetters Patent.

Patented Dec. 15, 1908.

Application filed September 3, 1907. Serial No. 391,091.

To all 'whom "it may concern:

Be it known that I, FERDINAND Novo'rNY, a subject of the Em eror ofAustria-Hungary, and a resident of T oboken, county of Hudson, State ofNew Jersey, have invented certain new and useful Improvements in Liquid-Heaters, of which the following is a specification.

The present invention pertains to heaters for water or other liquids,and has for its object to provide an apparatus whereby the heating of aliquid to the boiling point can be effected in the shortest possibletime and with the least consumption of fuel.

To make my invention more clear the same is illustrated in theaccompanying drawing in which similar reference letters denotecorresponding parts and in which- Figure 1 is a vertical section Fie'. 2aplan view of the apparatus; and Fig. 3 a diagram showing thecirculation of the liquid.

My apparatus consists of a pipe a which is adapted to be connected withthe main supply pipe of the liquid. The free end of this pipe terminatesin a closed shallow metal receptacle l) secured thereon. Surrounding thepipe and the receptacle b are a number of conically shaped metal casesc, d, c, of dif ferent diameters, which are telescopically mounted inand secured to one another to form air flues or passages j, the objectof which is to create a strong draft for the llame of a gas burner orrange g over which the apparatus is to be supported. The cases maypreferably be arranged in steps, t. c. the inner ease being highest, thenext following a little lower, the third again lower and so forth, whicharrangement is found to be advantageous to increase the draft. Each ofthe cases is provided on its outer surface with a series of longitudinalnarrow ducts lt, those of each series having apertures t', j tocommunicate alternately on top and bottom with one another'. From theclosed receptacle b a narrow tube l: leads into one of the end ducts ofthe inner case c, and the other end duct h of the latter communicates bya narrow tube l with one of the end ducts h of the second case d. Theother end duct of the latter is again by a tube m in communication withone end duct of the next case e and so forth. Surrounding the last ease(in the lpresent example the case e) is a closed receptacle n, withwhich the end duct of the last case communicates through an aperture o.The receptacle has a discharge cock p.

The mode of operation of the apparatus is as lollows2-Owii1g to 'theshallowness ol the receptacle l) the liquid contained therein will berapidly heated by the burner g and will rise through the narrow tube /rto circulate through the different series of ducts zf. Because of thedraft through the passages j, each of the cases will become highlyheated transmitting the heat to the ducts thereof, so

that finally the liquid, when entering the receptacle n, will be heatedto the boiling point. The number of cases and ducts depends upon thenature of the liquid to be boiled. Above the cases a reflector g isarranged which may be suitably secured to the pipe d.

Vhat I claim and desire to secure by Letters Patent is In a liquidheater, the combination with a burner, of a supply pipe, a shallow metalreceptacle communicating with the latter and extending above the burner,a plurality of conical metal cases telescopieally mounted in one anotherand forming draft passages between themselves, a reflector above saidcases, a series of longitudinal ducts formed on each case, theindividual ducts of each series communicating with one anotheralternately on top and bottom, a narrow tube leading from the shallowreceptacle into one end duct of the inner series, narrow tubesconnecting the different series with one another and a receptaclecommunicating with the outer series of ducts, said receptacle having adischarge, substantially as set forth.

Signed at New York this 3l day of August FERDINAND NOVOTNY. VitnessesFELix STEFFEN, Max D. ORDMANN.

